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Updated GLM version w/ now standard radians as angles.
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@@ -1,43 +1,66 @@
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// OpenGL Mathematics Copyright (c) 2005 - 2013 G-Truc Creation (www.g-truc.net)
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// Created : 2009-03-06
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// Updated : 2009-03-09
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// Licence : This source is under MIT License
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// File : glm/gtx/gradient_paint.inl
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///////////////////////////////////////////////////////////////////////////////////
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/// OpenGL Mathematics (glm.g-truc.net)
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///
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/// Copyright (c) 2005 - 2015 G-Truc Creation (www.g-truc.net)
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/// Permission is hereby granted, free of charge, to any person obtaining a copy
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/// of this software and associated documentation files (the "Software"), to deal
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/// in the Software without restriction, including without limitation the rights
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/// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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/// copies of the Software, and to permit persons to whom the Software is
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/// furnished to do so, subject to the following conditions:
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///
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/// The above copyright notice and this permission notice shall be included in
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/// all copies or substantial portions of the Software.
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///
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/// Restrictions:
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/// By making use of the Software for military purposes, you choose to make
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/// a Bunny unhappy.
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///
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/// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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/// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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/// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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/// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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/// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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/// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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/// THE SOFTWARE.
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///
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/// @ref gtx_gradient_paint
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/// @file glm/gtx/gradient_paint.inl
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/// @date 2009-03-06 / 2013-04-09
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/// @author Christophe Riccio
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///////////////////////////////////////////////////////////////////////////////////////////////////
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namespace glm
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{
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template <typename valType>
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valType radialGradient
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template <typename T, precision P>
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GLM_FUNC_QUALIFIER T radialGradient
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(
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detail::tvec2<valType> const & Center,
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valType const & Radius,
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detail::tvec2<valType> const & Focal,
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detail::tvec2<valType> const & Position
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tvec2<T, P> const & Center,
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T const & Radius,
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tvec2<T, P> const & Focal,
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tvec2<T, P> const & Position
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)
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{
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detail::tvec2<valType> F = Focal - Center;
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detail::tvec2<valType> D = Position - Focal;
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valType Radius2 = pow2(Radius);
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valType Fx2 = pow2(F.x);
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valType Fy2 = pow2(F.y);
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tvec2<T, P> F = Focal - Center;
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tvec2<T, P> D = Position - Focal;
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T Radius2 = pow2(Radius);
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T Fx2 = pow2(F.x);
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T Fy2 = pow2(F.y);
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valType Numerator = (D.x * F.x + D.y * F.y) + sqrt(Radius2 * (pow2(D.x) + pow2(D.y)) - pow2(D.x * F.y - D.y * F.x));
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valType Denominator = Radius2 - (Fx2 + Fy2);
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T Numerator = (D.x * F.x + D.y * F.y) + sqrt(Radius2 * (pow2(D.x) + pow2(D.y)) - pow2(D.x * F.y - D.y * F.x));
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T Denominator = Radius2 - (Fx2 + Fy2);
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return Numerator / Denominator;
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}
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template <typename valType>
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valType linearGradient
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template <typename T, precision P>
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GLM_FUNC_QUALIFIER T linearGradient
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(
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detail::tvec2<valType> const & Point0,
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detail::tvec2<valType> const & Point1,
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detail::tvec2<valType> const & Position
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tvec2<T, P> const & Point0,
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tvec2<T, P> const & Point1,
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tvec2<T, P> const & Position
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)
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{
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detail::tvec2<valType> Dist = Point1 - Point0;
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tvec2<T, P> Dist = Point1 - Point0;
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return (Dist.x * (Position.x - Point0.x) + Dist.y * (Position.y - Point0.y)) / glm::dot(Dist, Dist);
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}
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}//namespace glm
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